The information supplied will be anonymous enough for most users to feel safe, mitigating privacy concerns for the common denominator. Google will pull data from multiple users and combine it with different sources to alleviate your fears.
Right now, the traffic data is for highways, though I'd love to see it for city streets. If you've ever driven in Los Angeles urban streets, you'll know that city streets could be just as busy or worse than highway traffic.
Of course, if you're benevolent enough to contribute to the traffic data, remember to bring along a car charger as your smartphone will heavily utilize mobile data as well as a GPS connection.
Google's announcement may deflate a startup with a similar concept called Waze. Waze uses crowdsourcing for traffic, as well as to build map datas. The service is free and users can report traffic actively as well, telling the application whether there is a police hold up, an accident, etc. Waze also collects users' data to build maps for roads, especially in new neighborhoods. Waze can then monetize this new knowledge, though the service is free for users to use, providing turn-by-turn directions for no cost, though without voice guidance at this time.
Waze is available now for Android and the iPhone, though the firm did mention a Windows Mobile app is forthcoming. Google Maps, on the other hand, is not compatible with the current iPhone--at least not yet anyways--and is available for Android and Windows Mobile.
(via: Google and Gizmodo)
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